CN112520710A - Gas preparation system and fire engine - Google Patents
Gas preparation system and fire engine Download PDFInfo
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- CN112520710A CN112520710A CN202011379131.7A CN202011379131A CN112520710A CN 112520710 A CN112520710 A CN 112520710A CN 202011379131 A CN202011379131 A CN 202011379131A CN 112520710 A CN112520710 A CN 112520710A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/0438—Physical processing only by making use of membranes
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/008—Making of fire-extinguishing materials immediately before use for producing other mixtures of different gases or vapours, water and chemicals, e.g. water and wetting agents, water and gases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0251—Physical processing only by making use of membranes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
- C01B13/0262—Physical processing only by adsorption on solids characterised by the adsorbent
- C01B13/0266—Carbon based materials
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
- C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
- C01B21/0461—Carbon based materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
- C01B2210/001—Physical processing by making use of membranes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
- C01B2210/0014—Physical processing by adsorption in solids
- C01B2210/0015—Physical processing by adsorption in solids characterised by the adsorbent
- C01B2210/0017—Carbon-based materials
Abstract
The invention relates to the field of fire fighting equipment, and discloses a gas preparation system and a fire fighting truck, wherein the gas preparation system comprises an air supply unit, a membrane nitrogen preparation unit (10) and an oxygen treatment unit (20), the air supply unit is communicated with an inlet of the membrane nitrogen preparation unit (10), an oxygen outlet of the membrane nitrogen preparation unit (10) is communicated with an inlet of the oxygen treatment unit (20), so that oxygen separated from nitrogen preparation of the membrane nitrogen preparation unit (10) is treated by the oxygen treatment unit (20). The nitrogen gas can be produced through membrane system nitrogen unit on the one hand, and on the other hand can be through the oxygen processing unit processing membrane system nitrogen in-process separation oxygen to satisfy the demand to oxygen.
Description
Technical Field
The present invention relates to fire fighting equipment, and in particular to a gas production system and a fire fighting truck.
Background
Nitrogen has been used as a clean gas for new fire extinguishing systems in the fire fighting industry because of its characteristics of environmental protection, safety, no pollution to the protected objects, easy preparation, etc. Specifically, a nitrogen gas producing device can be arranged on the fire fighting truck to produce high-concentration nitrogen gas through compressed air on site to extinguish fire. However, the nitrogen preparation device of the existing fire engine has single function, can only prepare nitrogen, and cannot meet other requirements of fire fighting operation.
Disclosure of Invention
The invention aims to overcome the problem of single function of a nitrogen preparation device in the prior art, and provides a gas preparation system which can fully utilize oxygen separated from nitrogen preparation while preparing nitrogen so as to provide more functional gases.
In order to achieve the above object, in one aspect, the present invention provides a gas production system, wherein the gas production system comprises an air supply unit, a membrane nitrogen production unit and an oxygen treatment unit, the air supply unit is communicated with an inlet of the membrane nitrogen production unit, and an oxygen outlet of the membrane nitrogen production unit is communicated with an inlet of the oxygen treatment unit, so that oxygen separated from nitrogen produced by the membrane nitrogen production unit is treated by the oxygen treatment unit.
Optionally, the membrane nitrogen production unit comprises a nitrogen gas supply module and a membrane nitrogen production module for performing nitrogen-oxygen separation from air provided by the air supply unit, the membrane nitrogen production module is provided with the oxygen gas outlet and a nitrogen gas outlet, and the nitrogen gas supply module is communicated with the nitrogen gas outlet.
Optionally, the nitrogen gas supply module includes a nitrogen gas supply pipeline connected to the nitrogen gas outlet, and the nitrogen gas supply pipeline is provided with at least one of a nitrogen gas purity meter, a nitrogen gas flow meter, a first pressure regulating device, and a nitrogen gas supply valve.
Optionally: the air supply unit is communicated with the inlet of the membrane nitrogen preparation unit through a first pipeline L1, the air supply unit is communicated with the inlet of the oxygen treatment unit through a second pipeline L2, and a first control valve K1 and a second control valve K2 are respectively arranged on the first pipeline L1 and the second pipeline L2; and/or an oxygen outlet of the membrane nitrogen preparation unit is communicated with an inlet of the oxygen treatment unit through a third pipeline L3, a third control valve K3 is arranged on a third pipeline L3, the oxygen outlet of the membrane nitrogen preparation unit is communicated with the atmosphere through a fourth pipeline L4, and a fourth control valve K4 is arranged on the fourth pipeline L4.
Optionally, the oxygen processing unit includes that module and oxygen storage jar are prepared to oxygen, the entry that the module was prepared to oxygen communicate in the membrane nitrogen preparation unit the oxygen export, the export that the module was prepared to oxygen communicate in the oxygen storage jar.
Optionally, the oxygen processing unit includes a pressurizing module, an air purifying module and a purified air supply line L5, the oxygen outlet is communicated with the inlet of the pressurizing module, the outlet of the pressurizing module is connected to the inlet of the oxygen preparation module and the inlet of the air purifying module, respectively, the outlet of the air purifying module is communicated with the purified air supply line L5, and the purified air supply line L5 is provided with a purified air supply valve K5.
Optionally, the pressurizing module and the oxygen producing module are powered by a power supply module.
Optionally, the oxygen processing unit includes an oxygen supply line L8 communicated with the oxygen storage tank, and at least one of an oxygen purity meter, an oxygen flow meter, a second pressure regulating device, and an oxygen supply valve is disposed on the oxygen supply line L8.
The present application further provides a fire engine, wherein, the fire engine includes the gas preparation system of the present application.
Optionally, the air supply unit comprises an air compressor and a driving device for driving the air compressor, and the driving device is an engine power takeoff of the fire engine.
Through above-mentioned technical scheme, can produce nitrogen gas through membrane system nitrogen unit on the one hand, on the other hand can process the oxygen that membrane system nitrogen in-process separated through oxygen processing unit to satisfy the demand to oxygen.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of a gas production system according to the present application.
Description of the reference numerals
10-membrane nitrogen production unit, 11-membrane nitrogen production module, 12-nitrogen supply pipeline, 13-nitrogen purity meter, 14-nitrogen flow meter, 15-first pressure regulating device, 16-nitrogen supply valve, 17-nitrogen supply pipe valve, 20-oxygen treatment unit, 21-oxygen production module, 22-oxygen storage tank, 23-pressurization module, 24-air purification module, 241-pressure regulation module, 25-power supply module, 26-oxygen purity meter, 27-oxygen flow meter, 28-second pressure regulating device, 29-oxygen supply valve, 30-air compressor, 40-driving device, 50-coupler, 60-air treatment unit, L1-first pipeline, L2-second pipeline, l3 third line, L4 fourth line, L5 purge air supply line, L6 oxygen generation line, L7 purge line, L8 oxygen supply line, K1 first control valve, K2 second control valve, K3 third control valve, K4 fourth control valve, K5 purge air supply control valve, K6 oxygen generation control valve, K7 purge control valve, C1 first connection line, C2 second connection line.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to an aspect of the present application, a gas production system is provided, wherein the gas production system includes an air supply unit, a membrane nitrogen production unit 10, and an oxygen treatment unit 20, the air supply unit is communicated with an inlet of the membrane nitrogen production unit 10, an oxygen outlet of the membrane nitrogen production unit 10 is communicated with an inlet of the oxygen treatment unit 20, so as to treat oxygen separated by nitrogen production of the membrane nitrogen production unit 10 through the oxygen treatment unit 20.
With the gas production system of the present application, nitrogen gas can be generated by the membrane nitrogen production unit 10 on the one hand, and oxygen separated during the membrane nitrogen production process can be treated by the oxygen treatment unit 20 on the other hand, so as to meet the demand for oxygen.
The membrane nitrogen production unit 10 is used for producing nitrogen gas by separating nitrogen and oxygen through air. Specifically, the membrane nitrogen production unit 10 includes a nitrogen gas supply module and a membrane nitrogen production module 11 for performing nitrogen-oxygen separation from air provided by the air supply unit, the membrane nitrogen production module 11 is provided with the oxygen gas outlet and a nitrogen gas outlet, and the nitrogen gas supply module is communicated with the nitrogen gas outlet. Thus, the nitrogen gas produced by the membrane nitrogen production unit 10 can be supplied to a desired device or place through the nitrogen gas supply module, and the oxygen gas obtained by nitrogen-oxygen separation can be sent to the oxygen gas treatment unit 20 through the oxygen gas outlet to be further treated.
The nitrogen supply module may take various suitable forms as desired. For example, the nitrogen supply module may include a nitrogen storage tank to store nitrogen gas, so that nitrogen gas is supplied to the outside through the nitrogen storage tank when necessary. To facilitate on-site use of the nitrogen gas, the nitrogen gas supply module includes a nitrogen gas supply line 12 connected to the nitrogen gas outlet. In order to facilitate control of the quality (e.g., purity, pressure, flow rate, etc.) of nitrogen supplied from the nitrogen supply line 12, at least one of a nitrogen purity meter 13, a nitrogen flow meter 14, a first pressure regulating device 15, and a nitrogen supply valve 16 is provided on the nitrogen supply line 12. By providing the nitrogen purity meter 13, the purity of the nitrogen gas supplied from the nitrogen gas supply line 12 can be monitored. The nitrogen flow rate of the nitrogen supply line 12 can be monitored by providing the nitrogen flow meter 14. By providing the first pressure adjusting device 15, the pressure of the nitrogen gas supplied from the nitrogen gas supply line 12 can be adjusted. The supply of nitrogen gas can be controlled by providing a nitrogen gas supply valve 16. Specifically, the nitrogen gas supply line 12 may be connected to a plurality of nitrogen gas supply pipes, and each of the nitrogen gas supply pipes may be provided with a corresponding nitrogen gas supply pipe valve 17, so that whether each of the nitrogen gas supply pipes supplies nitrogen gas to the outside may be controlled as required. Also, each nitrogen gas supply pipe may be used to supply nitrogen gas to different functional mechanisms, for example, at least one nitrogen gas supply pipe may be connected to the nitrogen gas storage tank, and at least one nitrogen gas supply pipe may be connected to the fire extinguishing spray device.
Alternatively, as shown in fig. 1, the air supply unit may be in communication with the inlet of the membrane nitrogen production unit 10 through a first line L1, the air supply unit may be in communication with the inlet of the oxygen treatment unit 20 through a second line L2, and the first line L1 and the second line L2 may be provided with a first control valve K1 and a second control valve K2, respectively. Thus, the air can be directly treated by the oxygen treatment unit 20 without the need for nitrogen generation. Specifically, when nitrogen production is required, the first control valve K1 is controlled to be opened (according to the required nitrogen production amount, the second control valve K2 can be controlled to be opened or closed correspondingly, for example, when a large amount of nitrogen production is required, the second control valve K2 is controlled to be closed to enable the air supply unit to supply air to the membrane nitrogen production unit 10 only) so that the air supply unit supplies air to the membrane nitrogen production unit 10 to produce nitrogen; when nitrogen generation is not required, oxygen in the air is treated by controlling the first control valve K1 to be closed and the second control valve K2 to be opened so that the air supply unit supplies the air to the oxygen treatment unit 20.
In addition, the oxygen outlet of the membrane nitrogen making unit 10 can be communicated with the inlet of the oxygen treatment unit 20 through a third pipeline L3, a third control valve K3 is arranged on the third pipeline L3, the oxygen outlet of the membrane nitrogen making unit 10 can be communicated with the atmosphere through a fourth pipeline L4, and a fourth control valve K4 is arranged on the fourth pipeline L4. Thereby, oxygen separated in the nitrogen production may be selectively treated by the oxygen treatment unit 20 or discharged to the atmosphere. Specifically, when further processing of oxygen by the oxygen processing unit 20 is required, the third control valve K3 is opened and the fourth control valve K4 is closed; when no further processing of the oxygen by the oxygen processing unit 20 is required, the fourth control valve K4 is opened and the third control valve K3 is closed.
In the present application, the oxygen treatment unit 20 may take various suitable forms, and may perform various treatments on the oxygen-containing gas as needed. For example, since the concentration of oxygen in the nitrogen production separation is not high, the oxygen may be purified by the oxygen treatment unit 20.
In order to achieve the purification of oxygen, the oxygen processing unit 20 may include an oxygen preparation module 21 and an oxygen storage tank 22, an inlet of the oxygen preparation module 21 is communicated with the oxygen outlet of the membrane nitrogen preparation unit 10, and an outlet of the oxygen preparation module 21 is communicated with the oxygen storage tank 22. Thus, the oxygen gas prepared by the oxygen preparation module 21 may be stored in the oxygen storage tank 22 to be externally supplied with oxygen through the oxygen storage tank 22 when necessary. The oxygen production module 21 may take various suitable forms, such as purifying oxygen by the zeolite molecular sieve air separation principle, among others. Other gases and impurities remaining after purifying the oxygen can be discharged into the environment or collected for centralized treatment.
In addition, the input gas may be purified by the oxygen processing unit 20. Also, the input gas may be pressurized in order to improve the processing efficiency and quality. To this end, the oxygen treatment unit 20 may include a pressurizing module 23, an air purification module 24, and a purified air supply line L5, the oxygen outlet is communicated with the inlet of the pressurizing module 23, the outlet of the pressurizing module 23 is connected to the inlet of the oxygen preparation module 21 and the inlet of the air purification module 24, respectively, the outlet of the air purification module 24 is communicated with the purified air supply line L5, and a purified air supply valve K5 is provided on the purified air supply line L5. For selective operation, the outlet of the pressurizing module 23 can be connected to the inlet of the oxygen production module 21 and the inlet of the air cleaning module 24 via lines (oxygen production line L6, cleaning line L7) with control valves (e.g. oxygen production control valve K6, cleaning control valve K7), respectively. When in use, under the condition of needing oxygen generation, the oxygen generation control valve K6 is opened; in the case where purging is required, the purge control valve K7 is opened. Wherein, according to the main required processing effect, the opening degree of the oxygen generation control valve K6 and the purification control valve K7 can be controlled to distribute the gas amount processed by the oxygen generation module 21 and the air purification module 24. In addition, the pressure of the gas treated by the air purification module 24 can be adjusted by the pressure adjustment module 241.
The pressure increasing module 23 may be in various suitable forms, and may be a compressor, for example. Both the pressurizing module 23 and the oxygen production module 21 may be powered by a power module 25. The power supply module 25 may be a battery or a generator. In fig. 1, the first connection C1 represents a route for the power supply module 25 to supply power to the oxygen preparation module 21, and the second connection C2 represents a route for the power supply module 25 to supply power to the pressure boost module 23.
In addition, in order to monitor the quality of the oxygen processed by the oxygen processing unit 20, the oxygen processing unit 20 includes an oxygen supply line L8 connected to the oxygen storage tank 22, and at least one of the oxygen purity meter 26, the oxygen flow meter 27, the second pressure regulator 28, and the oxygen supply valve 29 is disposed on the oxygen supply line L8. By providing the oxygen purity meter 26, the purity of the oxygen supplied from the oxygen supply line L8 can be monitored. By providing the oxygen flow meter 27, the oxygen flow rate of the oxygen supply line L8 can be monitored. By providing the second pressure regulating device 28, the pressure of the oxygen gas supplied from the oxygen gas supply line L8 can be regulated. The supply of oxygen can be controlled by providing an oxygen supply valve 29. Specifically, the oxygen supply line L8 may be connected to a plurality of oxygen supply pipes, and each oxygen supply pipe may be provided with a corresponding oxygen supply valve 29, so that whether each oxygen supply pipe supplies oxygen to the outside may be controlled as required. Also, each oxygen supply tube may be used to supply oxygen to a different functional mechanism, for example, at least one oxygen supply tube may be connected to an oxygen cylinder to inflate the oxygen cylinder.
According to another aspect of the present application, a fire fighting vehicle is provided, wherein the fire fighting vehicle includes the gas production system of the present application.
The fire engine of this application can produce nitrogen gas through membrane system nitrogen unit 10 on the one hand, and on the other hand can be through the oxygen processing unit 20 oxygen of handling membrane system nitrogen in-process separation to satisfy the demand to oxygen.
In order to improve the processing efficiency and quality, the air supply unit may include an air compressor 30 and a driving device 40 for driving the air compressor 30. In order to provide the required power, the drive device 40 is the engine power takeoff of the fire engine. Therefore, power can be taken from the engine of the fire engine, and particularly under the working condition, the fire engine is in a parking mode, and the power of the engine can be fully utilized. Alternatively, the drive device 40 may be coupled to the air compressor 30 by a suitable transmission mechanism (e.g., a coupling 50).
In addition, to improve the treatment efficiency, the air supply unit may include an air treatment unit 60 to pre-treat the compressed air (for example, to perform fractional filtration, temperature adjustment, activated carbon adsorption, oil removal, etc. on oil and water in the air), and then deliver the air to the membrane nitrogen production unit 10 or the oxygen treatment unit 20.
The main modes of operation of the gas production system of the present application are described below with reference to the accompanying drawings.
Mode 1: simultaneous production of nitrogen and oxygen
The first control valve K1, the third control valve K3, and the nitrogen gas supply valve 16 are opened, and the second control valve K2, the fourth control valve K4, and the purge control valve K7 are closed.
After the air is compressed, oil-gas separated and cooled by the air compressor 30, the oil-water in the air is subjected to classified filtration, temperature adjustment and activated carbon adsorption oil removal by the air treatment unit 60, so as to obtain dry and clean air. Clean air enters the membrane nitrogen production unit 10 to produce nitrogen and the nitrogen is supplied to required fire fighting equipment through the nitrogen supply pipe 12, and meanwhile, mixed gas containing oxygen obtained by nitrogen-oxygen separation enters the oxygen treatment unit 20 and is pressurized by the pressurization module 23 and then is supplied to the oxygen production module 21 to produce oxygen.
The oxygen supply valve 29 can be opened or closed according to the required working conditions, oxygen is supplied in real time when the oxygen supply valve is opened, and the prepared oxygen is temporarily stored in the oxygen storage tank 22 when the oxygen supply valve is closed.
Mode 2: preparation of nitrogen
The first control valve K1, the fourth control valve K4, and the nitrogen gas supply valve 16 are opened, and the third control valve K3 and the second control valve K2 are closed.
After the air is compressed, oil-gas separated and cooled by the air compressor 30, the oil-water in the air is subjected to classified filtration, temperature adjustment and activated carbon adsorption oil removal by the air treatment unit 60, so as to obtain dry and clean air. Clean air enters the membrane nitrogen production unit 10 to produce nitrogen gas which is supplied to the required fire fighting equipment through the nitrogen gas supply line 12. The mixed gas containing oxygen gas generated by the nitrogen-oxygen separation is discharged to the atmosphere through the fourth line L4.
Mode 3: purifying air
The second control valve K2, the purge control valve K7, and the purge air supply control valve K5 are opened, and the first control valve K1, the third control valve K3, and the oxygen generation control valve K6 are closed.
After the air is compressed, oil-gas separated and cooled by the air compressor 30, the oil-water in the air is subjected to classified filtration, temperature adjustment and activated carbon adsorption oil removal by the air treatment unit 60, so as to obtain dry and clean air. The clean air is pressurized by the pressurizing module 23 and then supplied to the air cleaning module 24 to obtain cleaned air, and the pressure of the cleaned air is adjusted by the pressure adjusting module 231 and then supplied to the required fire fighting equipment through the cleaned air supply line L5.
Wherein, the nitrogen gas of preparing through the system of this application can the all-round demand that satisfies fire rescue. The nitrogen prepared by the system can be used for inhibiting inerting of a petrochemical storage tank and extinguishing a closed space, and can also be used for filling nitrogen of various fire-fighting equipment. The prepared oxygen can meet the requirement of fire rescue in an anoxic environment. The prepared purified air can meet the air supply of various fire-fighting equipment such as an air exhaling device and the like.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The present application includes the combination of individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A gas production system, characterized in that the gas production system comprises an air supply unit, a membrane nitrogen production unit (10) and an oxygen treatment unit (20), wherein the air supply unit is communicated with an inlet of the membrane nitrogen production unit (10), and an oxygen outlet of the membrane nitrogen production unit (10) is communicated with an inlet of the oxygen treatment unit (20), so that oxygen separated from nitrogen production by the membrane nitrogen production unit (10) is treated by the oxygen treatment unit (20).
2. Gas production system according to claim 1, wherein the membrane nitrogen production unit (10) comprises a nitrogen gas supply module and a membrane nitrogen production module (11) for nitrogen-oxygen separation from air supplied from the air supply unit, the membrane nitrogen production module (11) being provided with the oxygen outlet and a nitrogen gas outlet, the nitrogen gas supply module being in communication with the nitrogen gas outlet.
3. Gas production system according to claim 2, wherein the nitrogen supply module comprises a nitrogen supply line (12) connected to the nitrogen outlet, the nitrogen supply line (12) being provided with at least one of a nitrogen purity meter (13), a nitrogen flow meter (14), a first pressure regulating device (15), and a nitrogen supply valve (16).
4. The gas production system of claim 1, wherein:
the air supply unit is communicated with the inlet of the membrane nitrogen production unit (10) through a first pipeline L1, the air supply unit is communicated with the inlet of the oxygen treatment unit (20) through a second pipeline L2, and a first control valve K1 and a second control valve K2 are respectively arranged on the first pipeline L1 and the second pipeline L2; and/or the presence of a gas in the gas,
the oxygen outlet of the membrane nitrogen preparation unit (10) is communicated with the inlet of the oxygen treatment unit (20) through a third pipeline L3, a third control valve K3 is arranged on a third pipeline L3, the oxygen outlet of the membrane nitrogen preparation unit (10) is communicated with the atmosphere through a fourth pipeline L4, and a fourth control valve K4 is arranged on the fourth pipeline L4.
5. Gas production system according to claim 1, wherein the oxygen treatment unit (20) comprises an oxygen production module (21) and an oxygen storage tank (22), wherein an inlet of the oxygen production module (21) is in communication with the oxygen outlet of the membrane nitrogen production unit (10), and an outlet of the oxygen production module (21) is in communication with the oxygen storage tank (22).
6. The gas production system according to claim 5, wherein the oxygen treatment unit (20) comprises a pressurizing module (23), an air purification module (24) and a purified air supply line L5, the oxygen outlet communicates with the inlet of the pressurizing module (23), the outlet of the pressurizing module (23) is connected to the inlet of the oxygen production module (21) and the inlet of the air purification module (24), respectively, the outlet of the air purification module (24) communicates with the purified air supply line L5, and a purified air supply valve K5 is provided on the purified air supply line L5.
7. Gas production system according to claim 6, wherein the pressurization module (23) and the oxygen production module (21) are powered by a power supply module (25).
8. Gas production system according to claim 5, wherein the oxygen treatment unit (20) comprises an oxygen supply line L8 in communication with the oxygen storage tank (22), wherein the oxygen supply line L8 is provided with at least one of an oxygen purity meter (26), an oxygen flow meter (27), a second pressure regulating device (28), and an oxygen supply valve (29).
9. A fire fighting vehicle, characterized in that it comprises a gas production system according to any of claims 1-8.
10. A fire fighting vehicle as defined in claim 9, characterized in that the air supply unit comprises an air compressor (30) and a drive device (40) for driving the air compressor (30), the drive device (40) being an engine power take-off of the fire fighting vehicle.
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| CN202011379131.7A CN112520710B (en) | 2020-11-30 | 2020-11-30 | Gas preparation system and fire engine |
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| CN202011379131.7A CN112520710B (en) | 2020-11-30 | 2020-11-30 | Gas preparation system and fire engine |
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